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Payer mix comparison: preintervention and postintervention periods.
| Differential payment estimations | Preintervention | Postintervention | P value | |
| Average expected payment (US $), mean (SD) | 25,346 (4291) | 39,366 (4327) | <.001 | |
| Payer mix, % |
|
|
|
|
|
|
Medicaid | 71.6 | 72.2 | .94 |
|
|
Third party | 26.4 | 26.3 | .99 |
|
|
Self-pay | 0.8 | 0.4 | .79 |
